Controlling device for internal-combustion engines.



0. PODHAJ'SKY. GONTEOLLING DEVICE EUR INTERNAL ooMBUsTIoN ENGINES.

APPLICATION FILED DEO. 20, 1908.

Patented Mar. 14,1911.

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0. PODHAJSKY.

OONTBOLLING DEVICE FR INTERNAI. GOMBUSTION ENGINES. APPLIOATION FILED DBO. ze. 1908.

986,754. Patented Mar.14,1911.

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OTAKAR PDHAJSK, OF WARREN, PENNSYLVANIA.

CONTROLLING DEVICE FOR INTERNAL-COMBUSTION ENGINES.

To all whom 'it may concern:

Be it known that I, OTAKAR PODHAJsK', subject of the Emperor of Austria-Hungary, residing at lVarren, in the county of W'arren and State of Pennsylvania, have invented new and useful Improvements in Controlling Devices for IntcrnaLCombustion Engines, of which the following is a specification. l

This invention relates to controlling devices for internal combustion engines, and consists in certain improvements in the construction thereof as will be hereinafter fully described and pointed out in the claims.

The controlling device is particularly adapted for use in connection with internal combustion engines using producer gas,

and in the'preferred construction, the con' trolling device is also supplied with connections for a different quality (ordinarily natural gas) than producer gas, so that with the same general Vmechanism either Gas may be used, and consequently the usefullness of the engine increased.

The invention is illustrated in the accompanying drawings as follows:

Figure 1 is a section on the line 1-1 in Figs. 2, 3 and 4. Fig. 2 is a bottom view of the controlling device, the portion of the cylinder which is connected being in section. Fig. 3 is a section 0n the line 3--3 in Fig. 1. Fig. 4 is asection on the line 4-4 in Fig. 1.

1 marks the inlet passage of the engine cylinder; 2 the main inlet valve controlling said passage; 3 a valve case or mixing chamber; 4: the valve seat in the case on which the main inlet valve operates. The valve case 3 is set into the opening 5 of the cylinder leading from they passage 1, and extends through a valve chest 6. The valve chest has the gas passage 7 and air passage 8. The valve case 6 is provided with the openings 9 leading from the passage 7 to the interior of the case, and the ports 10 leading from the air passage 8 to the interior of the case. The upper part of the case 3 which is connected with the gas passage 7 is connected-with the lower part of the samecase by an opening 11. This o ening, is controlled by a valve 12. A cylindrical valve 1-3 operates upon passages 10. The valve 13 is con- Specica'tion of Letters Patent. Application filed December 26, 1908. Serial No. 469,366.

nected with the valve `12 by the web or spider 13, and these valves are supported by the stem 14.-. The stem 14 extends from the main inlet valve 2 through the case 3.

It is provided with the head 15 at its outer end, and a spring 16 is tensioned between this head and case and tends to maintain the valve in a closed position. During a certain stroke of th'e engine, the main valve is open either by 4reason of the reduction of pressure `on the inner side of the valve or mechanism not shown, and this moves the stem 14, so as to open the valves 12 and 13. It will be noted, that the gas passing through the opening 11, and through-the inlets 10 are admitted in opposite directions, so that the currents impinge, thus assuring a perfect mixture. This is because the air Apasses from the port 10 past the lip of the valve at a slant to the opening 11, whereas the gas admitted around the lip of the valve 12 has a slant toward the opening or port 10. The result is that the gas and air have a movement in opposite directions as they" leave their ports, and will come together and be better mixed than they would be were they injected into the mixing chamber in the same direction or in a direction more nearly co-incident. The valve 12 preferably enters the opening 11 and the valve 12 and opening ll'being cylindrical, so as to permit of the telescopic movement of the valve relatively to the opening. The closing of the valve 12 does not interfere with the perfect sealing of the valve 2. It also allows of an initial opening of the air valve prior to the openin of the gas valve.

The gas passage is controlled by a butterfly valve 17, and the air assage by a similar buttery valve 18. T ese butterfly valves-are both carried by a stem'19 which extends through the walls of the case. An arm 20 is fixed on the stem 19, and a controlling rod 21 is connected with the arm 20.

Ordinarily the "arm 21would be connected with the governing mechanism, and by means of this the buttery valves are swung, so as to control the admisson 'of air and as. In this way the mixer controlling devices Vespecially the valves 12 and 13 may have a uniform motion, except as this may be disratentedMar. 14', 1911.

turbed by the variation in pressure incident to the opening and closing of the valves 17and18. i' Y The gas passage 7 is provided with a valve 22 preferably of the butterlly type mounted on the stem 23, and provided with the operating handle 24. By means of this valve the producer gas may be cut oil. A valve 25 controls the passage 26, connecting the air passage 8 with the passage 7. This valve 25 is mounted on the stem 27. The stein has the head 28 secured to it and this is screwed into a socket 29, and by means of this screw the valve may' be opened and closed. By means of this valve 26 air in regulated quantities may be admitted to the -the chest.

gas passage. The urpose of this is to dilute a richer gas, w en a richer gas is-used, so that the proper mixture will be maintained within the case 3. n

As a matter of convenience, and often as an element of safety, itis often desirable to have the engine connected with a separate supply of gas, usually gas somewhat richerthan the producer gas. For this purpose the valve chest is provided with the passage 30, into which the gas passage 31 extends. The gas passage 3l is controlled by butterfly valve 32. A gas valve 33 is arranged in an opening 34 in the Wall between the passages 7 a-nd 30, and connects these passages, the passage 30 being connected with the cylinder 33 throughports 35. The cylinder is connected with the passage 7 by the ports 36. A valve 37 operates within 'the cylinder 33, and is provided with ports 38 which may be brought intoand out of register with the ports 36 for regulating these ports. The valve 37 is carried by a stem 39, which extends through the walls of A gear segment 40 is fixed on the shaft 39, and meshes a segment 41 on the stem 19. In order to control the capacity of the ports 36, the cylinder 33 is provided with a stein 42, which extends through a .cap 45 closing the opening 4G in the chest through which the cylinder is inserted. A nut 43 is secured on the stem and operates on a stud 44. By screwing this nut on the stud 44 the c linder 33v may be raised and lowered relative y to the ports 38, so that the capacity of the ports through the openings 38 and 36 may be varied. By chan ing the capacity of the gas ports the qua ity of mixture may be varied. Producer gas is admitted through thel pipe 47. Air through the pas'- 'sane 48 and natural as or a richer as is admitted through the pipe 49.

'l`lie mechanism as shown is arranged for the admission of the producer gas. The valve 22 isopen, the valve 25 closed, and the valve 32 closed with the parts so arranged, producer gas passes from the pipe 47 through the passage 7, openings 9 passing the valve 12, and comes into contact with the air and enters with the mixture past the valve 2. Air enters through the pipe 48, passage 8, openings 10, past the valve 13 coming into contact with gas and passing with the mixture to the cylinder. The quantity of air and gas admitted is regulated by the valves 17 and 18, these being actuated by the arm 2O in the manner described, the valve 2 operating during the suction stroke, opens the valves l2 and 13 uniformly with each stroke, exce t as the pressure.varies by reason of the va ves 17 and 18 being closed. lVlien it is desired to operate the engine with natural gas, the valve 22 is closed, the valve 32 open; The natural gas passes from the pipe 49 past the valve 32, passage 30, openings 35 through the cylinder 33, and by way admission of a small amount of air through the passage 2G, so that a proper mixture may be maintained without varying the shape or operationof the mixer valves. The capacity of the openings 38 may be varied by raising and lowering the cylinder in the manner described, to adjust it for diil'erent qualities of gas, as well as the changing of the quality of gas through dilution. The engine is still controlled through the same operating lever by the action of the valve 37 in the manner heretofore described. All that is necessary therefore, to shift the mechanism from one kind of gas to the other is to operate the valves 25, and 32.

It will be noted, that the valve 12 telescopes the opening 11 slightly, and that the valve 13 just closes the openings l0, the result of this is that upon the initial opening of the inlet valve mechanism, the air is introduced prior to the introduction of any gas. This has been found to be desirable in practice.

That I claim as new is:

l. In a controlling device for internal combustion engines, the combination of the mixing chamber; an air inlet passage for conveying the main volume ot air to the mixing chamber; two gas .inlet passages; means for controlling said gas passages for turning in-or cutting oli' said gas passages, whereby gases of different qualities may be used; and means for dilutingr the gases from one of said gas passages prior to its contact with the main volume of air to maintain the proper proportions of gas and air.

2. In a controlling device for internal combustion engines, the combination ,of the mixing chamber; an air inlet passage for conveying the main volume of air to the mixing chamber; two gasinlet passages connected with the mixing chamber; means for controlling said gas passages for turning in or cutting ott either ot' sa-id gas passages, whereby gases of ditferentqualities may be used: and means for diluting thc gas from one of said gas pasrages from the air passage prior to its contact with the main volume of air to maint-ain the proper proportions of gas and air.

3. In a controlling device for internal combustion engines, the combination of a mixing chamber; two valves connected together, one for controllin the introduction ot' air to the mixing cham er, and theother for controlling the introduction of gas to the mixing chambe; an air passage leading to the air valve; two gas passages for supplying gas to the gas valve; means for turning in or cutting oil either of said gas passages whereby gases of different qualities may 'be used with the same mixing device; and means for controlling said gas passages for maintaining the proportion of air and gas with ditferent qualities of gas in said `gas passages.

ft. In a controlling device for internal combustion engines, the combination ot' a main engine inlet valve; a mixing chamber; an air valve controlling the introduction of air to the mixing chamber; a gas valve c0ntrolling the introduction of gas to the mixing chamber, said air, gas and inlet valves being connected together-gan air passage leading to the air valve; two gas passages for supplying gas to the gas valve; means for turning in or cutting olf either of said gas passages: and means for controlling said gas passages for maintaining the proper proportion of air and gas in the mixing chamber.

5. In a controlling device for internal combustion engines, the combination of a mixing device; an air passage leading to said device; two gas passages for supplying gas to said mixing device; means for turning in or cutting oit' either of said gas passages: connected regulating devices for regulating the quantity of gas from both of said gas passages; and an operating mechanism for actuating said regulating devices.

6. In a controlling device for internal combustion engines, the combination of a mixing device; an air passage leading to said device: two gas passages for supplying gas to said mixing device; means for turning .in or cutting otf either of said gas passages: connected regulating devices for regulating the quantity of gas from both of said gas passages; an operating mechanism for actuating said regulating devices; and

means for varying the capacity of one 0f ysaid gas passages independently of the regulating device.

7. In a controlling device for internal combustion engines, the combination of a mixing device; an air passage leading to said mixing device; two gas passages for supplying gas to saidmixing device; connected regulating devices for said gas passages; a regulating device for the air passage: an operating mechanism for actuating said regulating devices; and means for xarying the capacity of one of the said gas passages independently of the regulating device.

8. In a controlling device for internal combustion engines, the combination of a mixing device; an air passage leading to said mixing device; a valve controlling the air passage; two gas passages connected 'with gas supplies ot' diti'erent qualities for supplying gas to said mixing device; a cylindrical valve case arranged in one of the gas passages; a cylindrical valve in said valve case, said valve and case being relatively inovable bot-h axially and rotatively whereby thc proportions ot' gas to air may be regulated by the adjustment of the valve and case relatively to each other in one direction and thc quantity of gas may be regulated by a movement of the valve and case relatively to each other in the other direction; and an operating device for simultaneously actuating said air valve and cylindrical va-lve in one direction.

9. In a controlling device for internal combustion engines, the combination of a mixing device; an air passage leading to said mixing device; two gas passages for supplying gas to said mixing device; a cylindrical valve case arranged in one of the gas passages; a cylindrical valve in said valve case, said valve having passages through it registering with passages in the case when the valve is open; an operating device for actuating said cylindrical valve; and means for adjusting lsaid case to vary the capacity of the passages through the cylindrical valve.

10. In a controlling device for internal combustion engines, the combination ofa. mixing device; an air passage leading to said mixing device; two gas passages for supplying gas to said mixing device, one adapted for producer gas, and the other for gas of different quality; a butterflyvalve controlling the producer gas passage; a cylindrical valve case in the other gas passage,

a cylindrical lvalve in said case; and an op' crating device actuating the butterfiy valve and the cylindrical valve.

11. In a controlling device for internal combustion engines, the combination of a valve chest containing a mixing chamber, and an air passage and two gas passages, leading to the mixing chamber, said gas passages merging before their entrance to the chamber, and said gas passages being adjacent to each other and separated by a single wall formed in the chest; and valves controlling the capacities of the air and gas passages, and for shutting off or turning on either of said gas passages.

12. In a controlling device, for internal combustion engines, the combination of a cylindrically shaped mixing valve case, containing a mixing chamber having an air passage and a gas passage, leading thereto, one of said passages being through the cylindrical walls of the case, and the other through the end of the case; a cylindrical valve operating uponl the passage through the cylindrical wall; and a valve operating upon the passage through the end of the case, said valves operating together, and

being positioned relatively to said passages to form openings from said passages, as the valve opens, in opposite directions whereby the inow of air and gas through 'said passages is in opposite directions.

13. In a controlling device for internal combustion engines, the combination of a mixing chamber having a cylindrical wall and an end wall, and having a gas opening and an air opening leading thereto. one of said openings being in the cylindrical wall of said chamber, and the other of said openings being in the end wall of said chamber; a gas valve operating on the gas opening and an air valve operating on the air opening, the passages formed as t-he valves open being opposingly disposed and extending in opposite directions whereby the air and gas delivered from s a'id passages enter the mixing chamber in opposite directions, meet, and are mixed by the impact.

14. In a controlling device for internal combustion engines, the combination of a mixing chamber having an air opening Aleading to the chamber and a gas opening leading to the chamber, said openings being in ldilerent walls of thechamber; a valve controlling the outflow of mixture from the mixing chamber; an air Valvecontrolling the air lopening` leading to said chamber; a gas valve controlling the gas opening leading to said chamber; and devices connecting the air and gas valves; and the valve controlling the outflow from the mixing chamber, said air and gas valves forming as they are opened, opposingly disposed passages having opposite directions, whereby the air and gas entering the said passages move in opposite directions, meets in the mixing chamber, and is mixed by the impact.

15. In a controlling device for internal combustion engines, the combination of a valve chest having air and gas passages and means of communication between the air and gas passages; butterfly valves control'- ling said passages; a valve 22 for closing off the gas passage; a valve 25 for controlling means of communication between the air and gas passages; a second gas passage leading to the first gas passage; an adjustable valve in said second gas passage and the mixing chamber to which gas and air are supplied from said passages.

16. In a controlling device for internal combustion engines, the combination of a valve chest having air and gas passages therein with a communicating passage between them for the passage of air from 4the air passa e to the gas passage for diluting a gas; a va ve 25 controlling the communicating passage; regulating valves in said air and gas passages controlling the flow of air and gas therein, the regulating valve inthe gas passage being lnearer the outlet from the gas passage than is the means of communication between the air passage and the gas passage.

'17. In a. controlling device for internal combustion engines, the combination .of a valve chesthaving air and gas passages therein with a means of communication between said passages; butterfly valves controlling said passages; a valve 22 for closing oii' the gas passage; a valve 25 for controlling means of communication between the air and gas passages; a second gas passage leading to the lirst gas passage; a valve 32 for controlling the passage of gas to the second passage; and a mixing chamber to which air and gas are supplied from said passages.

18. In a controlling device for internal combustion engines, the combination of'a mixing chamber; a valve mechanism for controlling a flow of air and gas through the mixing chamber having air and gas valves arranged to permit the flow of air, and then a mixture 'of air and gas; an air passage leading to the air valve; two gas passages for supplying gas to the said gas valve, adapted'for use with gases of dierent qualities; means for controlling said gas passages for maintaining the proper proportion of air and gas in the mixing chamber; and

means for turning in or cuttingoil either of mechanism.

19. In a controlling device for internal combustion engines, the combination of a valve mechanism controlling the admission 'of gas and air to the engine having air and gas valves adapted for use with gases of di'erent qualities; an air passage leading to the air valve; two gas passages for supply; to maintain the proper proportion of aix' 10 ing as to the gas valve; means for eonand gas at the Vvalve mechanism. trolling said passages for maintaining the In testimony whereof, I have hereunto Vset proper proportion of air and gas at the 1n hand in thepresence of two subscribing valve mechanism; means for turning in 0r wltnesses. y cutting off either of said gas passages where- OTAKAR PODHAJ SKY.

by gases of different qualities may be used Witnesses: with the same valve mechanism; and means G. C. Lo'i'r,

L. 1H. BURKHART.

for diluting the gas in one'of said passages 

